Wrap for rolls of paper



Feb. 4, 1964 o. M. THOMSEN 3,120,337

WRAP FOR ROLLS OF PAPER Filed Jan. 30, 1962 INVENTOR. OLIVER M. THOMSEN dqmirus 5' Star-Ife A fforneys United States Patent 3,120,337 WRAP FOR ROLLS OF PAPER Oliver M. Thomsen, Neenah, Wis., assignor to Wisconsin Container Corporation, Menasha, Wis, a corporation of Wisconsin Filed Jan. 30, 1962, Ser. No. 169,903 4 Claims. (Cl. 229-87) This invention relates to a protective wrap for rolls of paper.

Rolls of paper such as are employed in connection with printing presses are customarily wrapped with a prefabricated heavy paper wrap of uniform thickness throughout so as to protect the roll against damage from abrasion and to some extent from atmospheric conditions during handling and transit. Such a wrap ordinarily has a width considerably greater than the length of the roll and is generally provided with a score line along each edge corresponding to the respective ends of the roll which serve as guides during the wrapping operation and as an aid in folding the edges thereof over the ends of the roll. The edge portions of the wrap outwardly from the respective score lines are generally provided with a plurality of uniformly spaced V-shaped notches or slots presenting a toothed edge configuration which permits the Wrap to be used on rolls of a variety of diameters without overlap of adjacent lobes or tooth edges when the wrap edges are folded over the roll ends. Ordinarily one or more end discs or headers are employed with the folded-over edge portions of the wrap to completely encase the roll or paper.

Since customer preference and specifications require rolls of a variety of lengths, an expensive inventory of prefabricated wraps of corresponding widths must be maintained at all times. And if conditions of storage and transit require it, an additional moisture protective wrap is also applied to the roll. The foregoing protective measures represent a considerable handling expense and it is generally an object of this invention to provide an improved wrap for rolls of paper which will materially reduce this expense and yet provide comparable or better protection for such rolls.

According to this invention, a multiple ply Wrap is fabricated and utilized to protect the roll of paper. In the wrap construction of this invention, a layer of one or more plies of paper has a width considerably greater than the length of the roll. The layer is reinforced by one or more additional plies which extend from one side of the Wrap over a substantial portion of the width of the wrap to form a relatively thick or heavy wrap having one relatively thin side edge portion. A score line is provided adjacent the heavy edge of the wrap as a guide for the end of the roll during the wrapping operation and to aid in folding this edge over the end of the roll. Outwardly from the score line the heavy edge of the wrap is provided with a plurality of uniformly spaced V-shaped notches or slots presenting a toothed edge configuration. When the wrap is assembled onto a roll of a given lenth, the toothed edge may be folded over one end of the roll without overlap of adjacent tooth edges and the relatively thin side edge portion is folded over the opposite end of the roll. End discs or headers may be utilized to complete the encasement of the roll. The relatively thin side edge portion of the wrap of this invention can be folded at any width so that within limits the wrap may be used on rolls of diiferent lengths as well as for rolls of different diameters.

Further according to this invention, a film of an adhesive characterized by being substantially impervious to moisture vapor is utilized to bond the several layers to gether and serves as a barrier to protect the roll against moisture vapor during storage, handling and transit.

The drawings furnished herewith illustrate the best mode for carrying out the invention as presently contemplated and set forth hereinafter.

In the drawings:

FIG. 1 is a plan view with parts broken away and shows a roll of paper or the like partially wrapped Within the wrap of this invention;

FIG. 2 is an enlarged perspective view with parts broken away and sectioned to show a roll at a more advanced stage of wrapping; and

FIG. 3 is an end view of a fully wrapped roll with parts broken away to better show one of the end closures.

Referring to the drawings, the roll 1 of paper is to be enclosed within a paper wrap 2 to protect the roll against damage by abrasion and atmospheric vapor conditions during storage, handling and transit. As a matter of convenience and to correspond with the showing in the drawings, the wrap 2 is described herein as having width and length corresponding respectively to the length and peripheral dimensions of the roll 1. It is to be understood, however, that the roll 1 may have dimensions such as will require the width of the wrap to exceed dimensionally the length thereof.

The protective wrap 2 is of multiple ply construction and as shown in the drawings has a width considerably greater than the length of the roll 1 so that the side edges 3 and 4 of the wrap may be folded over the corresponding ends of the roll. The Wrap 2 comprises an outer layer 5 of one or more plies of paper which extends over the full length and width of the wrap. A second or reinforcing layer 6 of one or more plies of paper is disposed inwardly of layer 5 when considering the wrap as assembled onto a roll and extends over the full length of the wrap. The width of inner layer 6 is substantially less than that of layer 5 and extends from side edge 3 to a line 7 spaced inwardly from side edge 4 to thus provide a relatively heavy wrap having a relatively thin side edge portion 8 outwardly from line 7.

While any suitable adhesive may be utilized between the several plies of the respective layers 5 and 6, a film 9 of an adhesive characterized by being substantially impervious to moisture vapor such as a microcrystalline wax of the type which is a petroleum derivative, is deposited on the entire inner surface of layer 5 and serves as the adhesive between layers 5 and 6. To secure the desired adhesion the melted wax is spread over the surface of layer 5, and layer 6 is pressed thereagainst between suitable pressure rolls. With the wrap 2 assembled onto a roll, the film 9 further serves as a barrier to protect the roll against atmospheric vapor conditions.

Spaced inwardly a given distance from side edge 3, the wrap 2 is embossed or scored at line 10 to serve as a guide for the corresponding roll end during the wrapping operation and an aid in folding the heavy edge portion over the end of the roll. Outwardly of score line 10 the heavy edge portion of wrap 2 is provided with a plurality of uniformly spaced V-shaped notches or slots 11 defining individual flaps or teeth12 therebetween to present a toothed edge configuration along the Wrap side edge 3.

In the process of wrapping the roll 1, the corresponding end of the roll and the wrap are oriented with respect to the score line It) and the wrap is brought over the peripheral surface of the roll placing the wrap end edge portions in overlapping relation longitudinally of the roll as shown in FIG. 2. The overlap between the end edge portions of the wrap may be any given amount. .The

wrap 2 may of course be used on rolls of diifering diameters and where it is deemed necessary for rolls of a les ser diameter, the wrap may be trimmed to size to provide the desired amount of overlap. Any suitable adhesive may be used between the overlapping end edge portions of the wrap.

To protect the end of roll 1 corresponding to side edge 3 of the wrap, an inner end disc or header 13 having a diameter substantially equal to that of the roll is placed immediately adjacent the roll end and the flaps or teeth 12 are folded over the header along the score line 10. The toothed edge configuration prevents bunching due to overlap of adjacent teeth 12 of the folded-over heavy wrap portion along edge 3 which could damage the roll end when the heavy roll rests on that end. An outer end disc or header 14 of a diameter substantially equal to that of the roll -is secured in place with a suitable adhesive over the inner header 13 and the folded-over teeth 12 to complete the one end closure for the roll.

An inner header 13 is also placed adjacent to the opposite end of the roll corresponding to the wrap edge 4 Thereafter, the portion of the relatively thin wrap portion 8 which extends outwardly beyond the end of the roll is simply folded over the header 13 with some overlap of the thin wrap portion as shown in FIG. 3. It is of little consequence whether all of the relatively thin wrap portion 8 is folded over the roll end or that only a small portion of wrap portion 8 is folded over. Thus, within limits, the wrap 2 may be utilized for rolls of differing lengths. As shown in FIG. 3, end closure is completed with an outer header 14 which is secured in place over the inner header 13 and the folded-over portion of the wrap.

The protective wrap 2 of this invention is adapted to adequately protect rolls of paper against damage by abrasion. Since the wrap 2 includes a barrier against atmospheric vapor conditions, it is unniecessary to apply a second wrap to the roll for this purpose. The wrap 2 provides the further advantage of being usable within limits for rolls of different lengths as well as different diameters. As a result the cost and other problems relative to maintaining an adequate inventory of such wraps have been materially reduced.

Various modes of carrying out the invention are contemplated as being within the scope of the following claims particularly pointing out and distinctly claiming the subject matter which is regarded as the invention.

I claim:

1. A protective Wrap for rolls of paper, comprising a layer of one or more plies extending between first spaced opposed edges corresponding to the length of a roll and second spaced opposed edges generally normal to the first opposed edges, at least one additional ply overlying said layer and extending between said second opposed edges and from one of the first opposed edges thereof to a location spaced inwardly from the other of the first opposed edges to reinforce a major portion of said layer and provide a wrap having a relatively heavy edge portion corresponding to one end of a roll to be wrapped and a relatively thin edge portion corresponding to the other end of a roll to be wrapped, and a film of moisture vapor barrier adhesive disposed between said layer and said additional ply which secures said layer and ply together and serves to protect a roll of paper against damage due to moisture vapor, said wrap having a score line spaced inwardly from the heavy edge thereof to provide a guide for orienting the wrap relative to the corresponding end of a roll and an aid for folding the heavy edge portion over a roll end, said relatively heavy edge portion having a plurality of uniformly spaced V-shaped notches provided therein outwardly from said score line to define uniformly spaced flaps which upon being folded over the end of a roll will lie substantially in a plane without overlap, and said relatively thin edge portion being adapted for folding over a roll end corresponding thereto at any location between the reinforced wrap portion and the outer edge of the thin wrap portion to thereby accommodate within limits rolls of different length.

2. A protective wrap for rolls of paper, comprising a generally rectangular layer of one or more plies having first opposed edges corresponding to the length of a roll and second opposed edges generally normal to the first opposed edges and a second layer of one or more plies adhesively secured to the inner surface of said first layer when considering the wrap in its assembled relation on a roll and extending between said second opposed edges of said first layer and from one of the first opposed edges thereof to a location spaced inwardly from the other of said first opposed edges to reinforce a major portion of said first layer and provide a wrap having a relatively heavy edge portion corresponding to one end of a roll to be wrapped and a relatively thin edge portion corresponding to the other end of a roll to be wrapped, said wrap having a score line spaced inwardly from the edge of the heavy portion thereof to provide a guide for orienting the wrap relative to the corresponding end of a roll and an aid for folding the heavy edge portion over a roll end, said relatively heavy edge portion having a plurality of uniformly spaced V-shaped notches provided therein outwardly from said score line to define uniformly spaced flaps which upon being folded over the end of a roll will lie substantially in a plane without overlap, and said relatively thin edge portion being adapted for folding over the end of a roll corresponding thereto at any location between the reinforced wrap portion and the outer edge of the thin wrap portion and thereby provide a protective wrap adapted to accommodate within limits rolls of different length.

3. The invention of claim 2 wherein the entire inner surface of the first layer is coated with a film of microcrystalline wax which serves as an adhesive to secure said layers together and as a barrier to protect a roll of paper against damage due to moisture vapor conditions.

4. In a protective wrap for rolls of paper, a layer of one or more plies of paper extending between first spaced opposed edges corresponding to the length dimension of a roll and second spaced opposed edges generally normal to the first opposed edges, a second layer of at least one additional ply of paper overlying said first layer and extending between said second opposed edges and from one of the first opposed edges thereof to a location spaced inwardly from the other of the first opposed edges to reinforce a major portion of the first layer and provide a wrap having a relatively heavy edge portion corresponding to one end of a roll to be wrapped and a relatively thin edge portion corresponding to the other end of a roll, and a film of an adhesive characterized by being substantially impervious to moisture vapor disposed between said layers for securing the layers together and serving as a barrier to protect a roll against damage due to atmospheric vapor conditions, said relatively thin edge portion being adapted for folding over the corresponding end of a roll of paper at any location between the reinforced wrap portion and the outer edge of the thin wrap portion to thereby accommodate within limits rolls of different length.

References Cited in the file of this patent UNITED STATES PATENTS 595,763 Chope Dec. 21, 1897 732,889 Paver July 7, 1903 2,105,368 Parsons Jan. 11, 1938 2,271,455 Finn Jan. 27, 1942 2,502,749 Reid Apr. 4, 1950 2,714,952 Ireton Aug. 9, 1955 2,883,045 Abramson Apr. 21, 1959 

1. A PROTECTIVE WRAP FOR ROLLS OF PAPER, COMPRISING A LAYER OF ONE OR MORE PLIES EXTENDING BETWEEN FIRST SPACED OPPOSED EDGES CORRESPONDING TO THE LENGTH OF A ROLL AND SECOND SPACED OPPOSED EDGES GENERALLY NORMAL TO THE FIRST OPPOSED EDGES, AT LEAST ONE ADDITIONAL PLY OVERLYING SAID LAYER AND EXTENDING BETWEEN SAID SECOND OPPOSED EDGES AND FROM ONE OF THE FIRST OPPOSED EDGES THEREOF TO A LOCATION SPACED INWARDLY FROM THE OTHER OF THE FIRST OPPOSED EDGES TO REINFORCE A MAJOR PORTION OF SAID LAYER AND PROVIDE A WRAP HAVING A RELATIVELY HEAVY EDGE PORTION CORRESPONDING TO ONE END OF A ROLL TO BE WRAPPED AND A RELATIVELY THIN EDGE PORTION CORRESPONDING TO THE OTHER END OF A ROLL TO BE WRAPPED, AND A FILM OF MOISTURE VAPOR BARRIER ADHESIVE DISPOSED BETWEEN SAID LAYER AND SAID ADDITIONAL PLY WHICH SECURES SAID LAYER AND PLY TOGETHER AND SERVES TO PROTECT A ROLL OF PAPER AGAINST DAMAGE DUE TO MOISTURE VAPOR, SAID WRAP HAVING A SCORE LINE SPACED INWARDLY FROM THE HEAVY EDGE THEREOF TO PROVIDE A GUIDE FOR ORIENTING THE WRAP RELATIVE TO THE CORRESPONDING END OF A ROLL AND AN AID FOR FOLDING THE HEAVY EDGE PORTION OVER A ROLL END, SAID RELATIVELY HEAVY EDGE PORTION HAVING A PLURALITY OF UNIFORMLY SPACED V-SHAPED NOTCHES PROVIDED THEREIN OUTWARDLY FROM SAID SCORE LINE TO DEFINE UNIFORMLY SPACED FLAPS WHICH UPON BEING FOLDED OVER THE END OF A ROLL LIE SUBSTANTIALLY IN A PLANE WITHOUT OVERLAP, AND SAID RELATIVELY THIN EDGE PORTION BEING ADAPTED FOR FOLDING OVER A ROLL END CORRESPONDING THERETO AT ANY LOCATION BETWEEN THE REINFORCED WRAP PORTION AND THE OUTER EDGE OF THE THIN WRAP PORTION TO THEREBY ACCOMMODATE WITHIN LIMITS ROLLS OF DIFFERENT LENGTH. 